IEEE C80216m-08_1205 Project IEEE 802.16 Broadband Wireless Access Working Group <http://ieee802.org/16> Title Codebook for closed-loop SU and MU MIMO Date Submitted 2008-09-15 Source(s) David Mazzarese, Jerry Pi, Bruno Clerckx Samsung Electronics d.mazzarese@samsung.com Mo-Han Fong Nortel Networks mhfong@nortel.com Guangjie Li, Minnie Ho, Hongming Zheng, Qinghua Li, Shanshan Zheng, Feng Zhou, Senjie Zhang, Yang-seok Choi Intel Corporation guangjie.li@intel.com ytang@huawei.com Yang Tang Huawei bishwarup@motorola.com Bishwarup Mondal Motorola wbong@lge.com Wookbong Lee LGE rporat@nextwave.com Ron Porat Nextwave Re: *<http://standards.ieee.org/faqs/affiliationFAQ.html> SDD Session 56 Cleanup Abstract Codebook closed-loop SU and MU MIMO Purpose To discuss and adopt the proposal into the IEEE 802.16m SDD Notice Release Patent Policy This document does not represent the agreed views of the IEEE 802.16 Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein. The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.16. The contributor is familiar with the IEEE-SA Patent Policy and Procedures: <http://standards.ieee.org/guides/bylaws/sect6-7.html#6> and <http://standards.ieee.org/guides/opman/sect6.html#6.3>. Further information is located at <http://standards.ieee.org/board/pat/pat-material.html> and <http://standards.ieee.org/board/pat>. 1 IEEE C80216m-08_1205 Codebook for closed loop SU and MU MIMO Introduction We would like to further specify the codebook for closed-loop SU and MU-MIMO. Nearly all of the contributions that have been submitted describe codebooks that are .16e-based codebooks, DFT-based codebooks, or a mixture of the two. By further specifying the types of codebooks, we get closer to a final codebook design. Summary of Contributions Contribution Description of Technique Number(s)/Author C80216m-MIMO-08_074.doc C80216m-08_1101.pdf Bishwarup Mondal, Motorola C80216m-MIMO-08_070r1.doc C80216m-08_1109.doc Yang Tang, Huawei C80216m-MIMO-08_064r1.pdf C80216m-08_1074r1.pdf Jun Yuan, Nortel Networks C80216m-MIMO-08_069.doc C80216m-08_983.pdf C80216m-08_973.pdf Jaewan Kim, LGE C80216m-MIMO-08_066.ppt C80216m-08_1182.doc C80216m-08_1183.doc C80216m-08_1184.doc Qinghua Li, Intel C80216m-MIMO-08_067.doc C80216m-MIMO-08_1156.doc Shaohua Li, NSN, Nokia C80216m-MIMO-08_072r1 C80216m-08_916 Ron Porat, Nextwave C80216m-MIMO-08_063.doc C80216m-08_851r1 C80216m-08_1187 Bruno Clerckx, Samsung Electronics Entries limited to 8-PSK, rank nesting. 3-bits for 2 Tx and 4bits for 4 Tx. Base codebook with codewords forming centroids for localized codebooks. Design incorporates differential codebook design. Compared .16e with DFT codebooks. Added differential feedback to both .16e and DFT codebooks. Compared .16e codebooks (3, 6 bit) with Phase-adapted DFT (5-bit), DFT+AS (5-bit), and LTE codebook (4-bit). Proposal that MU-MIMO codebook is a subset of SU-MIMO. .16e-based codebook: add a transformation matrix based on channel correlation to the .16e codebook. Single-stream codebook that is a mixture of .16e and DFT codebooks. 4 Tx codebook with entries limited to +/-1,+/-j. Rank nesting 2 Tx DFT codebook, 4 Tx DFT-based codebook. Separate differential codebook based on rotation of base codebook. 2 IEEE C80216m-08_1205 Proposed Resolution for the Reply Comment on Comment #428 Accept the text proposed below and supercede comments 428, 429, 430, 433, 435, 436, 451. Proposed Text 11.8.2.1.2.1 Precoding technique In FDD and TDD systems, unitary codebook based precoding are supported. In TDD systems, sounding based precoding is supported. [To add to current text: For codebook based precoding, the codebook will be a .16e-based and/or DFT-based codebook.] 11.8.2.2.1 Precoding technique The precoding for MU-MIMO can be either standardized or vendor-specific. [To add the following text: The standardized codebook will be a .16e-based and/or DFT-based codebook.] 3